Bearing(azimuth) and distance via 2 gps coordnates

Hi all!

I'm trying to find the angle to north(bearing/azimuth) & distance between 2 gps coordinates. But obviously I have a mistake somewhere - it gives me wrong bearing&distance values. Please correct me where I'm wrong. Unity 5.3.1f1. The script is attached to the camera. I use float type because I use "azimuth" in gui.label in another script.

Here is the code:

 using UnityEngine;
 using System; 
 using System.Collections;
  public class Azimuth_calc : MonoBehaviour {     
 
 public float pointX; 
 public float pointY; 
 public float lat1=55.500817f; 
 public float lat2=55.380680f; 
 public float lon1=37.568342f; 
 public float lon2=37.822586f; 
 public float azimuth;
 
 void Update () { 
 float dlon = lon2 - lon1; 
 float dlat = lat2 - lat1;
 
 pointX = Mathf.Sin(dlon* 0.01745329f)*Mathf.Cos(lat2* 0.01745329f); 
 pointY = Mathf.Cos (lat1* 0.01745329f) * Mathf.Sin (lat2* 0.01745329f) - Mathf.Sin (lat1* 0.01745329f) * Mathf.Cos (lat2* 0.01745329f) * Mathf.Cos (dlon*0.01745329f); 
    azimuth=Mathf.Atan2(pointX, pointY)*57.29578f;
 
 double distance = Math.Pow(Math.Sin(dlat/2*0.01745329),2.0)+(Math.Cos(lat1* 0.01745329)*Math.Cos(lat2* 0.01745329)* Math.Pow(Math.Sin(dlon/2* 0.01745329),2.0)); 
 distance = 2.0*6376500.0*Math.Atan2(Math.Sqrt(distance),Math.Sqrt(1.0-distance)); 
 Debug.Log ("azimuth=" + azimuth); 
 Debug.Log ("distance=" + distance);     
 } 
 }

where * 0.01745329f is the conversion from degrees to radians and *57.29578f is the conversion from radians to degrees